Question: Who operated the Boeing 747 on June 28, 2000?
Paraphrase: Who was the Boeing 747's operator on June 28, 2000?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q179 p:P137 ?s . ?s ps:P137 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'2000')) }